samples/bpf: Fix fout leak in hbm's run_bpf_prog

Fix fout being fopen'ed but then not subsequently fclose'd. In the affected
branch, fout is otherwise going out of scope.

Signed-off-by: Hao Zeng <zenghao@kylinos.cn>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20230411084349.1999628-1-zenghao@kylinos.cn

diff --git a/samples/bpf/hbm.c b/samples/bpf/hbm.c
index ff58ec4..6448b78 100644 (file)
--- a/samples/bpf/hbm.c
+++ b/samples/bpf/hbm.c
@@ -315,6 +315,7 @@ static int run_bpf_prog(char *prog, int cg_id)
                fout = fopen(fname, "w");
                fprintf(fout, "id:%d\n", cg_id);
                fprintf(fout, "ERROR: Could not lookup queue_stats\n");
+               fclose(fout);
        } else if (stats_flag && qstats.lastPacketTime >
                   qstats.firstPacketTime) {
                long long delta_us = (qstats.lastPacketTime -